Curtain Size Calculator
Use the Curtain Size Calculator for a transparent, instant calculation with validated inputs and cited sources. For a query such as “Curtain Size Calculator”, enter the matching values and units below and review the stated assumptions.
How to use this calculator
Enter the requested values and units.
Review the assumptions and any warnings shown with the result.
Use the result together with the cited source and your real-world requirements.
Formula
Total curtain width = window width × fullness; each of two panels uses half that width, and curtain length = window height + extra drop.
Worked example
Worked example: Inputs: Window width: 60 in; Window height: 48 in; Fullness multiplier: 2; Extra vertical drop: 8 in. Outputs: Total curtain width: 120 in; Width per two-panel curtain: 60 in; Curtain length: 56 in.
Assumptions and limits
- The result depends on the values, units, and assumptions entered. It does not infer missing context.
Sources
- National Institute of Standards and Technology: Guide for the Use of the International System of Units (SI)Reference material reviewed for the stated method, units, or domain. Confirm that its scope matches your use case. Reviewed 2026-08-14.
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Frequently asked questions
How does the Curtain Size Calculator work?
Total curtain width = window width × fullness; each of two panels uses half that width, and curtain length = window height + extra drop.
What should I enter?
Window width, Window height, Fullness multiplier, Extra vertical drop
What should I verify?
Review the assumptions and any warnings shown with the result. The result depends on the values, units, and assumptions entered. It does not infer missing context.
Last updated 2026-08-14 · construction-curtain-size-v1 · opportunity-content-2026-08-14 · Trusty Calculator Editorial Team